AUTHOR= Frontiers Editorial Office TITLE=Retraction: Inhibitor 9 Combined With Androgen Deprivation Therapy or Chemotherapy Delays the Malignant Behavior of Castration-Resistant Prostate Cancer Through K-Ras/PLCϵ/PKCϵ Signaling Pathway JOURNAL=Frontiers in Oncology VOLUME=11 YEAR=2021 URL=https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2021.707608 DOI=10.3389/fonc.2021.707608 ISSN=2234-943X